EP0693764B1 - Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom - Google Patents

Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom Download PDF

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Publication number
EP0693764B1
EP0693764B1 EP95410065A EP95410065A EP0693764B1 EP 0693764 B1 EP0693764 B1 EP 0693764B1 EP 95410065 A EP95410065 A EP 95410065A EP 95410065 A EP95410065 A EP 95410065A EP 0693764 B1 EP0693764 B1 EP 0693764B1
Authority
EP
European Patent Office
Prior art keywords
striker
blade
contact arm
circuit breaker
passage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95410065A
Other languages
English (en)
French (fr)
Other versions
EP0693764A1 (de
Inventor
Jean-Yves Amblard
François Bucci
Philippe Delcambre
Eric Domejean
Alain Menier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric SE
Original Assignee
Schneider Electric SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schneider Electric SE filed Critical Schneider Electric SE
Publication of EP0693764A1 publication Critical patent/EP0693764A1/de
Application granted granted Critical
Publication of EP0693764B1 publication Critical patent/EP0693764B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2409—Electromagnetic mechanisms combined with an electromagnetic current limiting mechanism
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H2009/305—Means for extinguishing or preventing arc between current-carrying parts including means for screening for arc gases as protection of mechanism against hot arc gases or for keeping arc gases in the arc chamber
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2454—Electromagnetic mechanisms characterised by the magnetic circuit or active magnetic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/24—Electromagnetic mechanisms
    • H01H71/2472—Electromagnetic mechanisms with rotatable armatures

Definitions

  • the object of the invention is to provide an electrical circuit breaker for high performance, insensitive to any phenomenon of external manifestations.
  • the circuit breaker according to the invention is characterized in that the striker is formed by a elongated part located between the magnetic circuit and the first compartment, and cooperating with the contact arm support means for closing the passage between the first and second compartments after attraction of the pallet, and to free said passage after the pallet recall to the spread position.
  • the axis of connection of the striker on the pallet is arranged in an intermediate zone between the axis of articulation of the pallet, and the second air gap.
  • the striker constitutes a screen which adapts to the internal part of the housing. The passage between these two compartments is advantageously located above the first air gap opposite the fixed contact.
  • the means for supporting the contact arm have drive stops cooperating with the mechanism, and a bearing face cooperating with the free end of the striker to delimit said passage
  • Figure 1 is a schematic elevational view of the circuit breaker equipped with the actuator according to the invention.
  • FIG. 2 represents a perspective view of the actuator of FIG. 1.
  • Figure 3 is a sectional view through the median plane of the actuator of Figure 2, the pallet and the striker being in the inactive position.
  • Figure 4 shows a plan view of Figure 3.
  • Figure 5 is an identical view to Figure 3, in the active position of the pallet and the striker.
  • Figure 6 is a plan view of Figure 5.
  • a circuit breaker 1 comprises a housing 2 containing a contact fixed 3, a movable contact 4 mounted at the end of a movable contact arm 5, a chamber 6 and various elements of electrical connections (not shown) allowing connect the fixed and mobile contact to terminals (not shown).
  • the circuit breaker includes plus an electromagnetic actuator AE causing in the event of a fault the tripping of the circuit breaker, and rapid separation of fixed and mobile contacts 3, 4.
  • the electromagnetic actuator AE comprises a yoke 7 made of magnetic material, a swivel pallet 8, and a striker 9.
  • the cylinder head or magnetic circuit 7 in the form of an H comprises a core 10 cylindrical surrounded by a coil 34, and two sides 11, 12 arranged parallel between them, and extending perpendicular to the axis of the core 10.
  • the flank 11 has a first end 13 directed towards the pallet 8 and a second opposite end 14.
  • the other sidewall 12 comprises a third end (not shown) directed towards the pallet 8 and a opposite fourth end 16.
  • the first end 13 and the third end form coplanar pole faces cooperating with the flat face 18 of the pallet 8.
  • the second and fourth ends 14, 16 form flat faces arranged opposite one another to delimit a first air gap 17.
  • the vane 8 When the electromagnetic actuator AE is at rest, the vane 8 is located at a certain distance from the face 18 of the cylinder head 7 by forming a second air gap 19.
  • the pivoting pallet 8 is mounted on a hinge pin 21 and the contact arm mobile 5 is also pivotally mounted by means of another hinge pin 22.
  • the fixed contact 3 is located at the base of the air gap 17, and at least part of the contact arm mobile 5 extends through the air gap 17.
  • the striker 9 is in the form of a elongated substantially rectangular part, one end of which is articulated on an axis of link 23 arranged on the pallet 8, and the other free end 24 of which is located near the movable contact arm 5, and on the side opposite to the fixed contact 3.
  • the width of the striker corresponds substantially to the width of the housing.
  • the contact arm 5 is carried by support means 26 arranged opposite the movable contact 4, and having drive stops cooperating with the mechanism (not shown) for closing and separating the contacts 3, 4.
  • the support means 26 additionally comprise a support face 36 cooperating with the free end 24 of the striker 9.
  • the connecting pin 23 of the striker 9 on the pallet 8 is located in an intermediate zone between the hinge pin 21 and the second air gap 19.
  • the free end 24 of the striker 9 is separated from the bearing face 36 by a passage 28 in the form of a slot whose thickness is variable depending on the magnetization state of the electromagnetic actuator AE.
  • the striker 9 in addition to its acceleration function of the contact arm 5, thus plays the role of a separation screen between the two compartments, and the slot 28 remains closed in the attracted position of the pallet 8, that is to say as long that the current in the coil exceeds a predetermined value. Plugging the slot 28 during the arc extinction phase prevents any backflow of gas to the upper compartment 30, and in particular towards the orifice for passage of the lever, so as to avoid any phenomenon of external manifestations on the front face of the case 2.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Breakers (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electromagnets (AREA)
  • Vehicle Body Suspensions (AREA)
  • Keying Circuit Devices (AREA)
  • Relay Circuits (AREA)

Claims (4)

  1. Leistungsschalter mit Isolierstoffgehäuse (2), das ein erstes Abteil (30) zur Aufnahme des Schaltmechanismus' (31) sowie ein zweites Abteil (32) umfaßt, welches ein elektromagnetisches Antriebselement (AE) und einer Lichtbogenlöschkammer (6) zugeordnete trennbare Kontakte (3, 4) enthält, wobei das genannte Antriebselement einen Magnetkreis (7) sowie
    einen Kern (10) mit einer darauf montierten Erregerspule (34),
    einen ersten Luftspalt (17), in dem sich der bewegliche Kontaktarm (5) zur Einnahme einer Ruhestellung entsprechend dem Einschaltzustand der Kontakte (3, 4) bzw. einer aktiven Stellung entsprechend der Trennung der Kontakte bei Überschreiten eines bestimmten Schwellwerts durch den Strom erstreckt,
    einen mit Polflächen (13) des Magnetkreises (7) zur Bildung eines dem ersten Luftspalt (17) gegenüberliegenden zweiten Luftspalts (19) zusammenwirkenden Kippanker (8)
    sowie einen dem Anker (8) zugeordneten Schlagbolzen (9) zur Beaufschlagung des Kontaktarms (5) in Richtung der Ausschaltstellung nach magnetischer Anziehung des Ankers (8) gegen die Polflächen umfaßt,
    dadurch gekennzeichnet, daß der Schlagbolzen (9) als zwischen dem Magnetkreis (7) und dem ersten Abteil (30) angeordnetes längliches Teil ausgebildet ist und mit den Trägermitteln (26) des Kontaktarms (5) zusammenwirkt, um nach dem Anziehen des Ankers (8) den Übergang (28) zwischen dem ersten und dem zweiten Abteil (30, 32) zu verschließen bzw. den genannten Übergang nach Rückstellung des Ankers (8) in die Rückzugsstellung freizugeben.
  2. Leistungsschalter nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindungsachse (23) des Schlagbolzens (9) auf dem Anker (8) in einem zwischen der Gelenkachse (21) des Ankers (8) und dem zweiten Luftspalt (19) liegenden Zwischenabschnitt angeordnet ist.
  3. Leistungsschalter nach Anspruch 2, dadurch gekennzeichnet, daß der Schlagbolzen (9) als an den Innenraum des Gehäuses (2) angepaßte Schottung ausgebildet und der Übergang (28) oberhalb des ersten Luftspalts (17), auf der dem feststehenden Kontakt (3) abgewandten Seite angeordnet ist.
  4. Leistungsschalter nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Trägermittel (26) des Kontaktarms (5) mit dem Schaltmechanismus (31) zusammenwirkende Mitnahmeanschläge sowie eine mit dem freien Ende (24) des Schlagbolzens zur Begrenzung des genannten Übergangs (28) zusammenwirkende Aufprallfläche (36) umfassen.
EP95410065A 1994-07-18 1995-06-29 Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom Expired - Lifetime EP0693764B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409067 1994-07-18
FR9409067A FR2722609B1 (fr) 1994-07-18 1994-07-18 Disjoncteur electrique a actionneur electromagnetique pour calibres eleves

Publications (2)

Publication Number Publication Date
EP0693764A1 EP0693764A1 (de) 1996-01-24
EP0693764B1 true EP0693764B1 (de) 1999-03-24

Family

ID=9465633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95410065A Expired - Lifetime EP0693764B1 (de) 1994-07-18 1995-06-29 Elektrischer Lastschalter mit elektromagnetischem Betätiger für Hochstrom

Country Status (9)

Country Link
EP (1) EP0693764B1 (de)
CN (1) CN1052332C (de)
AT (1) ATE178160T1 (de)
DE (1) DE69508482T2 (de)
ES (1) ES2131291T3 (de)
FR (1) FR2722609B1 (de)
HU (1) HU215878B (de)
RU (1) RU2144715C1 (de)
TR (1) TR199500864A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2768856B1 (fr) * 1997-09-24 1999-11-12 Schneider Electric Sa Disjoncteur a declencheur electromagnetique a propulseur d'un contact mobile a fourche
EP2541569B2 (de) * 2011-06-29 2023-12-20 Hitachi Energy Ltd Zweistrompfad für hohen Nennstrom
RU2709189C1 (ru) * 2016-08-30 2019-12-17 Цзяньпин ЧЖАО Рычаг прерывателя цепи

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH87462A (de) * 1920-04-15 1920-12-01 Sprecher & Schuh Ag Selbst-Auslöser-Einrichtung auf Einführungsisolatoren von Ölschaltern.
DE2945618A1 (de) * 1979-10-23 1981-05-07 BBC AG Brown, Boveri & Cie., Baden, Aargau Verfahren zum oeffnen eines ueberstromschalters sowie ueberstromschalters sowie ueberstromschalter zur ausfuehrung des verfahrens
EP0225207B1 (de) * 1985-10-31 1991-05-15 Merlin Gerin Kinematische Übertragungskette zwischen dem Steuermechanismus und den Polen eines elektrischen Lastschalters mit einem gespritzten Isoliergehäuse

Also Published As

Publication number Publication date
RU2144715C1 (ru) 2000-01-20
EP0693764A1 (de) 1996-01-24
ATE178160T1 (de) 1999-04-15
RU95113114A (ru) 1997-06-27
ES2131291T3 (es) 1999-07-16
FR2722609A1 (fr) 1996-01-19
CN1052332C (zh) 2000-05-10
TR199500864A2 (tr) 1996-06-21
DE69508482D1 (de) 1999-04-29
HUT73314A (en) 1996-07-29
FR2722609B1 (fr) 1996-08-30
HU215878B (hu) 1999-03-29
DE69508482T2 (de) 1999-10-07
CN1118511A (zh) 1996-03-13
HU9502111D0 (en) 1995-09-28

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